In hours you are able to play out an entire lifetime of investing. (biggerpockets.com)
They're not Kipling, but if you remember both of those principles through the ups and downs of the market cycle, I expect that they'll replace a great deal of grief with a great deal of success over a lifetime of investing. (valueinvestingworld.com)
If I were to choose anything that investors should memorize — that will serve them well over a lifetime of investing — it would be the following two principles: (hussmanfunds.com)